[Joseph Upson]

Originally Posted by mrtohil

I was able to obtain some specs from the school. I have them on hand if you need them. The concern that I have is making a torque plate for this motor to bore it out correctly.
I don't see anything about min. cyl wall thickeness... WHICH MEANS it's okay to have paper thin walls to have max. bore.... Ha!

There is a pretty extensive spec sheet for the motor already available on the forum, it just can't be trusted fully. The rods are not 5.9" as advertised for example.

[bszopi]

http://60degreev6.com/content/3900_E...Specifications

[Joseph Upson]

Take measurements of the rocker arm bolt diameter at the top. The 3900 heads are designed after the LS1 heads, the rocker arms look identical although I suspect the bolts for the LS1 might be a little thicker. Since the pistons are interchangeable bore wise, if the rockers are also that would be another performance hurdle cleared. If they work and I believe they will, the possibility of building a very powerful 60 degree V6 without custom parts will be very easy. Here is a link to some nice LS1 rockers while it lasts;

http://cgi.ebay.com/ebaymotors/Scorp...9456QQtcZphoto

http://cgi.ebay.com/ebaymotors/_Car-...=p4506.c0.m245

[SappySE107]

Scorpion is making us rockers. They are close to the LS1 but not identical or compatible.

[Joseph Upson]

Originally Posted by SappySE107

Scorpion is making us rockers. They are close to the LS1 but not identical or compatible.

Is that compared to the 3900 rockers also? they are different compared to the 3500 rockers and appear to be identical to the LS1 rocker. It was a close call from the picture though.

[SappySE107]

Yes they designed some rockers for the 3900 as well. They are close but not compatible.

[IsaacHayes]

Interesting that your block was not painted on that one side, its all rusty!

[mrtohil]

Yeah, that'll be corrected after the oven & peening. After that I'm painting it to make it centerfold worthy .

[Nightingale]

My manual confirms a stock deck height of 8.818. The wierd thing is this manual also says rod length is 5.9", but after talking with pauter rods who measured my stocker they gave me a measurement of 5.827 center to center. Hopefully the rest of the specs are all good to go by. No word on wall thickness yet. If anyone needs any other specs listed I will be happy to share.

[bszopi]

I'm willing to bet your manual will list the exact same specs we already have on the site (see post #12 for link).